US3907433A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Moving target firing simulator and a method of adjustment of said simulator
Assignee: Individual
•
Filing: 1973-10-19
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Granted: 1975-09-23
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Expires: 1993-10-19
Abstract
Abstract Electromagnetic pulse trains produced by means of a weapon firing mechanism are concentrated by a convergent optical system into a narrow beam which is directed towards a scale-model target provided on one lateral face with spaced photosensitive receivers. A screen provided with an opening which forms an object for the optical system is placed between this latter and a pulse generator. The contour, dimensions and distance between the opening and the optical system, the mean distance between the weapon and the target and the spatial distribution of the receivers on the target are so determined that the envelope of the center of the spot remains practically inscribed within the simplified perimeter of the target face when the spot is displaced around the target with its contour approximately tangent to one photosensitive receiver.
Inventors
- 👤 Jacques Nault
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:43
CPC Classifications
F; F41; F41G; F41G3/00; F41G3/26; F41G3/2616; F41G3/2622; F41G3/2655; F41G3/28; F41J; F41J5/00; F41J5/02
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
218 words
A moving target firing simulator comprising a weapon having a firing axis and equipped with a generator which produces electromagnetic pulse trains of short wavelength and is controlled by the firing mechanism of said weapon, a convergent optical system for concentrating said pulse trains into a narrow beam directed to the target, said beam forming at its intersection with said target a spot having a predetermined contour and whose center travels on an envelope when the beam is moved with respect to the target, means for displacing the axis of said beam through a predetermined angle with respect to the firing axis, and photosensitive receivers distributed on target faces, wherein said simulator comprises a screen pierced by an opening which forms an object for the optical system, said screen being placed between the pulse-train generator and the optical system, and wherein the contour and the dimensions of said opening, the distance between said opening and said optical system, the distribution of the photosensitive receivers on one lateral face of the target, are so determined that the envelope of the center of the spot remains practically inscribed within aa simplified perimeter of the lateral face of the target when the spot is displaced around said target with the contour of said spot maintained approximately tangent to said photosensitive receivers.
Claim 2
Dependent Claim
218 words
A moving target firing simulator comprising a weapon having a firing axis and equipped with a generator which produces electromagnetic pulse trains of short wavelength and is controlled by the firing mechanism of said weapon, a convergent optical system for concentrating said pulse trains into a narrow beam directed to the target, said beam forming at its intersection with said target a spot having a predetermined contour and whose center travels on an envelope when the beam is moved with respect to the target, means for displacing the axis of said beam through a predetermined angle with respect to the firing axis, and photosensitive receivers distributed on target faces, wherein said simulator comprises a screen pierced by an opening which forms an object for the optical system, said screen being placed between the pulse-train generator and the optical system, and wherein the contour and the dimensions of said opening, the distance between said opening and said optical system, the distribution of the photosensitive receivers on one lateral face of the target, are so determined that the envelope of the center of the spot remains practically inscribed within aa simplified perimeter of the lateral face of the target when the spot is displaced around said target with the contour of said spot maintained approximately tangent to said photosensitive receivers.
Claim 3
Dependent Claim
74 words
A simulator according to claim 1, wherein the photosensitive receivers are arranged in spaced relation along a line and within a region located internally of said line, said line bounding the area swept by the spot within said simplified perimeter in order that the surface swept by the spot should cover practically the entire target face when said spot is placed in successive positions in which its center coincides with each receiver in turn.
Claim 4
Dependent Claim
53 words
A simulator according to claim 1 and in which the spot contour is symmetrical with respect to two axes, wherein each axis has a length substantially equal to the minimum dimension of all the simplified contours of the lateral faces of the target as measured parallel to the direction of the axis aforesaid.
Claim 5
Dependent Claim
49 words
A simulator according to claim 3, wherein each point of the line aforesaid is located with respect to the simplified perimeter of the corresponding target face at distances which are measured parallel to the axes of the spot and are at least equal to half of the corresponding axis.
Claim 6
Dependent Claim
70 words
A simulator according to claim 4, wherein the number of photosensitive receivers placed on one lateral face of the target is equal at a maximum to the product of the ratios between the maximum dimension of said face as measured parallel to each axis of the spot and the length of the corresponding axis of said spot, each ratio aforesaid being rounded-off to the nearest whole number of higher value.
Claim 7
Dependent Claim
46 words
A simulator according to claim 1, wherein the weapon comprises means for moving the pulse train generator in a transverse direction with respect to the optical axis of the convergent system, said optical axis being such as to coincide with the firing axis of the weapon.
Claim 8
Dependent Claim
41 words
A simulator according to claim 6, wherein the weapon comprises a support having a rectilinear slot located substantially at right angles to the firing axis and a slide unit which is engaged within said slot and supports the pulse train generator.
Claim 9
Dependent Claim
53 words
A simulator according to claim 7, wherein the weapon comprises a rotary tubular sleeve which is coaxial with the firing axis and contains the convergent optical system and wherein the sleeve is provided with a stud substantially at right angles to the slot aforesaid and engaged in a bore on the slide unit.
Claim 10
Dependent Claim
110 words
A simulator according to claim 8, comprising a rectangular deflecting prism placed between the pulse-train generator and the convergent optical system and rotatably mounted about two axes at right angles to each other and to the optical axis of the convergent system, said axis being sucH as to coincide with the firing axis of the weapon, wherein the prism is mounted on a shaft which is transverse with respect to the tubular sleeve and substantially vertical in firing position, and wherein one extremity of said shaft is rigidly fixed to a supporting slide unit whilst the other extremity is engaged in a bearing which is attached to the tubular sleeve.
Claim 11
Dependent Claim
36 words
A simulator according to claim 9, wherein the slide unit is engaged in guiding slideways and meshes with a threaded micrometric rod which is substantially parallel to the axis of the optical system of the weapon.
Claim 12
Dependent Claim
42 words
A simulator according to claim 10, wherein the prism support shaft is fitted with a transverse arm which can be displaced in rotation about a vertical axis in firing position by means of a threaded operating rod attached to the tubular sleeve.
Claim 13
Dependent Claim
56 words
A simulator according to claim 1, which comprises a first relay actuated by a photosensitive receiver in order to produce a sound or visual signal and in order to actuate a control system to modify the movement of the target, said simulator comprising means for disconnecting said control system for modifying the movement of said target.
Claim 14
Dependent Claim
25 words
A simulator according to claim 12, wherein said simulator comprises a second relay connected to the first relay with interposition of a fixed-delay control circuit.
Claim 15
Dependent Claim
37 words
A simulator according to claim 1, wherein the opening which is formed in the screen and determines the contour of the spot has an elongated contour, for example, and may be of the rectangular or elliptical type.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-22 | 1979-03-24 | 1979-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-22 | 1983-03-24 | 1983-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-22 | 1987-03-24 | 1987-09-23 | $7700.00 | Window Closed / Lapsed |